I downloaded some weather icons but when I install it I still have the standard icon from weather.com?
did you change the line in your skin file that looks like:
options,weathericondir,Weather Icons\Weather.com,png
how do I do that? is it in the config file?
There should be a file in the Skins sub-directory that has the name of your skin. As an example, the default file that caome with TodayPlus is called slider.txt and it is in the Skin sub-directory. You need to change the line in that file as MadTxn suggests.